Pawl for spindle swing arms



June 17, 1941. w, STAHLECKER 2,246,473

PAWL FOR SPINDLB SWING ARMS Filed May 27, 1939 INVENTOR: Wilhelm Stahlecker HIS ATTO EY Patented June 17, 1941 UNITED STATES PATENT OFFICE PAWL FOR SPINDLE SWING ARMS fabriken A. G.,

Schweinfurt,

Werk Bad- Cannstatt, Germany, a corporation of Germany Application May 2'7, 1939, Serial No. 276,087 In Germany March 4, 1939 2 Claims.

The invention relates to improvements on the so-called swinging brackets for spindles of spinning, threading and similar textile machines which serve the purpose to press the wharves for normal working condition against the continuously moving tape, so that it is put in rotation by it or serves to interrupt the contact between spindle wharve and drive tape.

According to invention, a counterforce, for instance, a spring, is provided to equalize the moment produced by the weight of spindle and bracket and transmitted to the pin of the swinging bracket. As an additional feature, the spring finds a use which eliminates otherwise essential parts and arrangements. This means a saving which is of great importance for parts like textile spindles which are used in large quantities.

For this purpose the equalizing spring acts also on the pawl which keeps the swinging bracket in the position in which the spindle is not in motion. The spring can be arranged between swinging bracket and pawl in such a way that a higher tension is set up through the swinging of the bracket and provides with this a sure grip of the pawl, upon the release of the spindle.

In the accompanying drawing, one practicable form of the device is illustrated, in which drawing Figure 1 is a side view of the parts in normal service.

Figure 2 shows the same parts released.

Figure 3 is a plan view of the device illustrated in Figure 1, and Figure 4 is a plan view of the lever.

The swing pin housing 6 is fastened in a suitable way on the spindle bank by means of the outside thread 1. On it is fastened the swing arm I by means of pin II. The spindle with its bearing 2 is mounted in swing arm I in the usual way.

The spring 3 is not only used to equalize the moment set up by the weight of the spindle and support arm on pin 6, but is fastened with its other end to pawl 9 to hold this up against the catch [0 when arm I is turned out and the spindle wharve is not in contact with the driving tape. With the moving of the arm i from the position in Figure 1 to position in Figure 2, the spring is stretched and is shown holding pawl 9 against the catch ill with increased power. A stop I6 is shown against which the pawl 9 is pressed by the spring 3. If pawl 9 is pressed down and the catch Ill on swinging arm I released, the wharve or the spindle is pressed against the tape or belt in the usual manner, i. i. by a weight hung in the hole It, Figure 3.

According to the tension which is given to spring 3 in comparison to the total weight of the swinging arm and spindle with bearing and with the selection of the point of action of the spring on the pawl it is possible to either have the catch l0 moving over pawl 9, or have cap 8 and arm I lifted a certain amount which would bring about an active distribution of the lubricant. Although but one form of my invention has been illustrated, yet changes may be made within the scope of the claims without departing from the spirit of my invention.

Having thus described my invention, I claim and desire to secure by Letters Patent the following:

1. Means for supporting the spindles of textile machines, embodying a part adapted to be fastened to a machine, a bracket, a bearing pin securing the bracket to the said part, so that it may swing, an arm fastened to the bracket with a spring for equalization of the moment brought about by the weight of the spindle and arm acting upon the bearing pin of the swinging bracket, a pawl and detent for holding the bracket in a released position, and the equalization spring acting upon such pawl.

2. A device as per claim 1 distinguished by the arrangement of the equalization spring between bracket and pawl in such a way as to increase the tension upon the release of the spindle.

WlLl-IELM STAI-ILECKER. 

